> A big part of the problem is that there is no single entity that defends the citizens interest in this instance.

Isn't the European Parliament supposed to be this entity ?

The real problem is that if you have a single entity, then that entity can easily be corrupted by those who have the means to (read: money). This problem is unsolvable because those who have or profit from this power are also the people who get to decide if we want to do something about it.